Vaillant aurotherm classic VFK 135/2 VD Installation Manual page 20

5 Flat roof fitting and installation
5.1.1.3 Transporting collectors
1. To protect the collectors against damage, always trans-
port them horizontally.
2. Transport the collectors to the roof using suitable aids.
5.1.2 Complying with clearances and installation
clearances
During storms, turbulence (swirling) causes strong wind
forces to occur along the edges of flat roofs.
▶
When defining the installation position, maintain an edge
clearance of at least 1 m from the roof edge.
5.1.3 Selecting suitable connection
▶ When installing the collectors, observe the installation
instructions for the auroFLOW plus system.
▶
Select the appropriate connection for the collectors.
Conditions: Collector position: Vertical
▶ Install a maximum of six collectors next to each other.
Note
Collector fields with 4-6 collectors must be
connected on opposite sides.
Note
If the collector field is connected on opposite
sides, the mounting rails must have an incline
to the lower connection (collector return) of
approx. 1 %.
5.1.4 Preparing the roof duct
Caution.
Lack of tightness due to destruction of the
roof skin.
In the event of destruction of the roof skin,
water may penetrate the building.
▶ Ensure adequate protection of the roof
skin during installation on roof sealing
surfaces.
▶ Place large-area building protection mats
underneath the installation system.
▶
After installation, check the tightness of
the building shell where there are directly
connected racks.
▶
Commission a roofer to prepare the roof duct.
20
5.1.5 Selecting the installation variant
C
B
▶ Make a selection from the three available installation
variants:
Installation variants
Floating installation with load plates and
A
load weights.
Floating installation without load plates.
B The rack must be screwed onto suitable
load weights.
C Rack screwed directly onto the roof.
Installation manual auroTHERM classic 0020159946_01
A
Meaning